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APA Citation
Wandel, S., Jüni, P., Tendal, B., Nüesch, E., Villiger, P. M., Welton, N. J., Reichenbach, S., & Trelle, S. (2010). effects of glucosamine, chondroitin, or placebo in patients with osteoarthritis of hip or knee: network meta-analysis. BMJ, 341, . http://access.bl.uk/ark:/81055/vdc_100144730615.0x000032